User Manual

7-73
Connecting power to the RMBs
This section describes how to supply power to RMBs in the cabinet, as well as
recommendations for the type of power supply to use.
When choosing a power supply, keep in mind:
• Each base station requires 150 watts at 48 volts. So, if your cabinet holds 8 RMBs, the
power supply should provide 1250 watts, at a minimum.
• The power supply you choose should use an “n + 1” configuration, so that the RMBs have
a backup power source in case one of the power supply modules fails.
Powering the base station
To connect the base station to a power supply, connect these components in the order that
follows:
1 Connect the RMB to the antenna.
2 If you are using a GPS to supply a timing pulse to the base stations, connect the GPS to
the GPS connector on the cabinet. Place a terminal plug on the other GPS connector on
the cabinet.
Note: If you are using an RMB to supply the timing pulse to the other RMBs, set up the base
station as described in the section “Configuring the time signal used by base stations.” The
cable harness in the cabinet then supplies the other RMBs in the cabinet with timing
information.
3 Connect the Ethernet cable to the switch.
4 Connect the RMB to the power supply.
5 Connect the power supply to the UPS, if a UPS is available.
6 Connect the power supply and the UPS to an AC power supply.